I make a lot of stuff from scratch and a 3D printer is an excellent way to quickly test if something is going to work or not in practice. Also: musical instrument parts, prototype machinery, replacement bits for old gear that you can't buy anymore. It's the sort of thing that you use more and more the longer you have it because you see applications that you never dreamed off before getting it.
You won't be using it make your own chair (or at least, you probably shouldn't) and you won't be mass marketing anything 3D printed nor will you compete in the marketplace with anything that can be injection molded or stamped.
But for a quick one-off part if beats whittling out of a piece of wood by quite a distance.
On another note: soldering irons and hammers are also not for everybody, some people will never get the hang of fabrication. But once you are in the group that likes to make stuff 3D printers are just one more option in the tool arsenal.
You won't be using it make your own chair (or at least, you probably shouldn't) and you won't be mass marketing anything 3D printed nor will you compete in the marketplace with anything that can be injection molded or stamped.
But for a quick one-off part if beats whittling out of a piece of wood by quite a distance.
On another note: soldering irons and hammers are also not for everybody, some people will never get the hang of fabrication. But once you are in the group that likes to make stuff 3D printers are just one more option in the tool arsenal.